A study of energy harvesting from piezoelectrics using impact forces

Djugum, R, Trivailo, P and Graves, K 2009, 'A study of energy harvesting from piezoelectrics using impact forces', The European Physical Journal - Applied Physics, vol. 48, no. 11101, pp. 1-5.


Document type: Journal Article
Collection: Journal Articles

Title A study of energy harvesting from piezoelectrics using impact forces
Author(s) Djugum, R
Trivailo, P
Graves, K
Year 2009
Journal name The European Physical Journal - Applied Physics
Volume number 48
Issue number 11101
Start page 1
End page 5
Total pages 5
Publisher E D P Sciences
Abstract Piezoelectric elements can be used to harvest electrical energy when impact forces are applied to their surfaces. Often, however, only the peak voltages, or peak power output is used as a measure of device performance, and the total energy harvested during an impact force is overlooked. For energy harvesting applications, such as small-scale piezoelectric batteries, the total energy generated over an impact cycle should be considered. In this paper the total energy efficiency of several commercially available piezoelectric materials are evaluated using impact testing. The results revealed that different materials have significantly different energy efficiencies due to factors such as material type and device construction. Further, it was found that peak power output is not always the most appropriate measure of device performance for energy conversion applications.
Subject Electrical and Electronic Engineering not elsewhere classified
ISSN 1286-0042
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